<template>
  <el-card>
    <div slot="header">
      <el-steps :active="activeStep" simple>
        <el-step
          :title="item.title"
          :icon="item.icon"
          v-for="(item, index) in steps"
          :key="index"
          @click.native="activeStep = index"
        ></el-step>
      </el-steps>
    </div>
    <el-form label-width="80px">
      <div v-show="activeStep === 0">
        <el-form-item label="课程名称">
          <el-input v-model="course.courseName"></el-input>
        </el-form-item>
        <el-form-item label="课程简介">
          <el-input v-model="course.brief"></el-input>
        </el-form-item>
        <el-form-item label="课程概述">
          <el-input
            style="margin-bottom: 10px"
            v-model="course.previewFirstField"
            type="textarea"
            placeholder="概述1"
          ></el-input>
          <el-input
            v-model="course.previewSecondField"
            type="textarea"
            placeholder="概述2"
          ></el-input>
        </el-form-item>
        <el-form-item label="讲师姓名">
          <el-input v-model="course.teacherDTO.teacherName"></el-input>
        </el-form-item>
        <el-form-item label="讲师简介">
          <el-input v-model="course.teacherDTO.description"></el-input>
        </el-form-item>
        <el-form-item label="课程排序">
          <el-input-number
            v-model="course.sortNum"
            label="描述文字"
          ></el-input-number>
        </el-form-item>
      </div>
      <div v-show="activeStep === 1">
        <el-form-item label="课程封面">
          <!--
            upload 上传文件组件，它支持自动上传，你只需要把上传需要参数配置一下就可以了
            -->
          <!--
            1. 组件需要根据绑定的数据进行图片预览
            2. 组件需要把上传成功的图片地址同步到绑定的数据中
            v-model 的本质还是父子组件通信
              1. 它会给子组件传递一个名字叫 value 的数据（Props）
              2. 默认监听 input 事件，修改绑定的数据（自定义事件）
            -->
          <course-image v-model="course.courseListImg" :limit="50" />
        </el-form-item>
        <el-form-item label="介绍封面">
          <course-image v-model="course.courseImgUrl" :limit="50" />
        </el-form-item>
      </div>
      <div v-show="activeStep === 2">
        <el-form-item label="售卖价格">
          <el-input v-model.number="course.discounts" type="number">
            <template slot="append">元</template>
          </el-input>
        </el-form-item>
        <el-form-item label="商品原价">
          <el-input v-model.number="course.price" type="number">
            <template slot="append">元</template>
          </el-input>
        </el-form-item>
        <el-form-item label="销量">
          <el-input v-model.number="course.sales" type="number">
            <template slot="append">单</template>
          </el-input>
        </el-form-item>
        <el-form-item label="活动标签">
          <el-input v-model="course.discountsTag"></el-input>
        </el-form-item>
      </div>
      <div v-show="activeStep === 3">
        <el-form-item label="限时秒杀开关">
          <el-switch
            v-model="course.activityCourse"
            active-color="#13ce66"
            inactive-color="#ff4949"
          >
          </el-switch>
        </el-form-item>
        <template v-if="course.activityCourse">
          <el-form-item label="开始时间">
            <el-date-picker
              v-model="course.activityCourseDTO.beginTime"
              type="date"
              placeholder="选择日期时间"
              value-format="yyyy-MM-dd"
            />
          </el-form-item>
          <el-form-item label="结束时间">
            <el-date-picker
              v-model="course.activityCourseDTO.endTime"
              type="date"
              placeholder="选择日期时间"
              value-format="yyyy-MM-dd"
            />
          </el-form-item>
          <el-form-item label="秒杀价">
            <el-input
              v-model.number="course.activityCourseDTO.amount"
              type="number"
            >
              <template slot="append">元</template>
            </el-input>
          </el-form-item>
          <el-form-item label="秒杀库存">
            <el-input
              v-model.number="course.activityCourseDTO.stock"
              type="number"
            >
              <template slot="append">个</template>
            </el-input>
          </el-form-item>
        </template>
      </div>
      <div v-show="activeStep === 4">
        <el-form-item label="课程详情">
          <text-editor v-model="course.courseDescriptionMarkDown" />
          <!-- <el-input v-model="course.courseDescriptionMarkDown" type="textarea"></el-input> -->
        </el-form-item>
        <el-form-item label="是否发布">
          <el-switch
            v-model="course.status"
            :active-value="1"
            :inactive-value="0"
            active-color="#13ce66"
            inactive-color="#ff4949"
          />
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleSave">保存</el-button>
        </el-form-item>
      </div>
      <el-form-item v-if="activeStep >= 0 && activeStep < 4">
        <el-button @click="activeStep++">下一步</el-button>
      </el-form-item>
    </el-form>
  </el-card>
</template>

<script lang="ts">
import { Component, Prop, Vue } from 'vue-property-decorator'
import { saveOrUpdateCourse, getCourseById } from '@/api/course'
import CourseImage from './CourseImage.vue'
import TextEditor from '@/components/TextEditor/index.vue'

import moment from 'moment'
@Component({
  components: {
    CourseImage,
    TextEditor
  }
})
export default class CreateOrUpdate extends Vue {
  @Prop({
    default: false
  })
  private isEdit: any

  @Prop()
  private courseId: any

  private activeStep = 0
  private steps: any[] = [
    { title: '基本信息', icon: 'el-icon-edit' },
    { title: '课程封面', icon: 'el-icon-edit' },
    { title: '销售信息', icon: 'el-icon-edit' },
    { title: '秒杀活动', icon: 'el-icon-edit' },
    { title: '课程详情', icon: 'el-icon-edit' }
  ]

  private course: any = {
    courseName: '',
    brief: '',
    teacherDTO: {
      teacherName: '',
      teacherHeadPicUrl: '',
      position: '',
      description: ''
    },
    courseDescriptionMarkDown: '',
    price: 0,
    discounts: 0,
    priceTag: '',
    discountsTag: '',
    isNew: true,
    isNewDes: '',
    courseListImg: '',
    courseImgUrl: '',
    sortNum: 0,
    previewFirstField: '',
    previewSecondField: '',
    status: 0, // 0：未发布，1：已发布
    sales: 0,
    activityCourse: false, // 是否开启活动秒杀
    activityCourseDTO: {
      beginTime: '',
      endTime: '',
      amount: 0,
      stock: 0
    },
    autoOnlineTime: ''
  }

  private created () {
    if (this.isEdit) {
      this.loadCourse()
    }
  }

  private async loadCourse () {
    const { data } = await getCourseById(this.courseId)
    const { activityCourseDTO } = data.data
    if (activityCourseDTO) {
      activityCourseDTO.beginTime = moment(activityCourseDTO.beginTime).format(
        'YYYY-MM-DD'
      )
      activityCourseDTO.endTime = moment(activityCourseDTO.endTime).format(
        'YYYY-MM-DD'
      )
    }
    this.course = data.data
  }

  private async handleSave () {
    const { data } = await saveOrUpdateCourse(this.course)
    if (data.code === '000000') {
      this.$message.success('保存成功')
      this.$router.push('/course')
    } else {
      this.$message.error('保存失败')
    }
  }
}
</script>

<style scoped>
.el-step {
  cursor: pointer;
}
</style>
